From: Alexei Starovoitov <ast@plumgrid•com>
To: Daniel Borkmann <daniel@iogearbox•net>, davem@davemloft•net
Cc: netdev@vger•kernel.org, Thomas Graf <tgraf@suug•ch>
Subject: Re: [PATCH net-next 2/2] ebpf: add helper to retrieve net_cls's classid cookie
Date: Wed, 15 Jul 2015 14:06:22 -0700 [thread overview]
Message-ID: <55A6CB4E.1080307@plumgrid.com> (raw)
In-Reply-To: <9862a6b8778d344e8e10380060f09b161caac12f.1436961536.git.daniel@iogearbox.net>
On 7/15/15 5:21 AM, Daniel Borkmann wrote:
> It would be very useful to retrieve the net_cls's classid from an eBPF
> program to allow for a more fine-grained classification, it could be
> directly used or in conjunction with additional policies. I.e. docker,
> but also tooling such as cgexec, can easily run applications via net_cls
> cgroups:
>
> cgcreate -g net_cls:/foo
> echo 42 > foo/net_cls.classid
> cgexec -g net_cls:foo <prog>
>
> Thus, their respecitve classid cookie of foo can then be looked up on
> the egress path to apply further policies. The helper is desigend such
> that a non-zero value returns the cgroup id.
>
> Signed-off-by: Daniel Borkmann<daniel@iogearbox•net>
> Cc: Thomas Graf<tgraf@suug•ch>
looks good to me.
Acked-by: Alexei Starovoitov <ast@plumgrid•com>
next prev parent reply other threads:[~2015-07-15 21:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-15 12:21 [PATCH net-next 0/2] BPF update Daniel Borkmann
2015-07-15 12:21 ` [PATCH net-next 1/2] cls_cgroup: factor out classid retrieval Daniel Borkmann
2015-07-15 12:21 ` [PATCH net-next 2/2] ebpf: add helper to retrieve net_cls's classid cookie Daniel Borkmann
2015-07-15 21:06 ` Alexei Starovoitov [this message]
2015-07-20 19:41 ` [PATCH net-next 0/2] BPF update David Miller
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